Reagent reactive recording type concrete tester

Abstract

The present invention is a concrete testing device for reacting crushed powder discharged during the drilling of a concrete specimen with a reagent, comprising a contact plate (10) attached to the specimen and a transparent container (20) coupled to the front of the contact plate (10) and loaded with a reagent, thereby simultaneously collecting the crushed powder and reacting with the reagent, and allowing the user to immediately check whether the reagent has changed color. Through the present invention, rapid and accurate measurement of concrete carbonation depth is possible using only a device with a simple configuration.

Description

Technology Field

[0001] The present invention is a concrete testing device for reacting crushed powder discharged during the drilling of a concrete specimen with a reagent, comprising a contact plate (10) attached to the specimen and a transparent container (20) coupled to the front of the contact plate (10) and loaded with a reagent, thereby simultaneously collecting the crushed powder and reacting with the reagent, and allowing the user to immediately check whether the reagent has changed color. Background Technology

[0003] Carbonation or neutralization is a phenomenon in which cement contained in hardened concrete reacts with atmospheric carbon dioxide and other substances to lose its original basicity; as carbonation intensifies, it leads to damage such as corrosion of embedded reinforcing steel or deterioration of the concrete structure.

[0004] Since carbonation or neutralization is primarily caused by atmospheric factors and tends to progress from the surface of the concrete inward, in the diagnosis and inspection of various structures, the depth of carbonation on the concrete surface is defined as the carbonation depth, and the soundness of the concrete structure is determined by measuring this depth. The problem to be solved

[0006] One method for measuring the carbonation depth of concrete involves taking a cylindrical core from the concrete under test and spraying a phenolphthalein solution, a basic reaction reagent, onto the core to measure the length from the surface to the discolored area. While this method offers excellent accuracy, it requires forming a large-diameter cutting hole in the structure under test, which inevitably causes significant damage to the structure and thus limits its application to structures in use.

[0007] Therefore, in the practical diagnosis or inspection of structures in use, a method is primarily utilized in which crushed powder ejected while drilling concrete specimens is collected. This involves an inspector, in addition to the one operating the drill, holding a container or turntable directly below the drilling point to collect the powder and moving the container or turntable in proportion to the drill's penetration depth into the specimen. The actual carbonation depth is indirectly determined by spraying a reaction reagent onto the drilled powder collected at different depths and observing the location of discoloration.

[0008] However, since it is impossible to accurately match or proportionally match the drill's entry speed into the test specimen with the movement or rotation speed of the powder container or turntable, the accuracy is inevitably lacking, and in particular, since it is impossible to perform the work by a single person and at least two people must be mobilized, it is disadvantageous in terms of work efficiency and economy.

[0009] Accordingly, technologies such as Patent No. 1729318, which involves impregnating a reagent onto a rotating plate for collecting crushed powder and rotating it in an electric manner to perforate a test object, and Patent No. 1984502, which involves utilizing a stepped perforation plate to repeatedly perforate a test object step by step and collecting the powder by separating it according to the perforation depth, have been developed to seek a single inspector to perform the perforation of the test object and the collection of crushed powder alone. However, the former has limitations in that it requires a mechanical device with a complex structure and it is extremely difficult to synchronize the rotation speed of the rotating plate with the drilling speed. In the latter case, there is the inconvenience of having to repeatedly stop and start the perforation, and there are problems such as measurement errors and excessive damage to the test object caused during this process. means of solving the problem

[0011] The present invention, conceived to take into account the aforementioned problems, enables accurate and rapid measurement of carbonation depth with a simple device configuration and allows for independent operation. It relates to a concrete testing device that collects crushed powder discharged during drilling of a concrete specimen and reacts it with a reagent. A contact plate (10) with a plate hole (11) drilled in the upper center is attached to the surface of the specimen, and a support part (13) protruding forward is formed on the lower part of the contact plate (10). A transparent front plate part (22) with a narrow upper section and a wide lower section with a hollow hole (21) drilled in the upper center has a side wall part (23) formed on the outer side and a transparent container (20) with an open rear side is coupled to the upper side of the support part (13) of the contact plate (10). A storage tank (31) in which a reagent is stored is formed inside the transparent container (20). The specimen passing through the hollow hole (21) and plate hole (11) of the drill bit (91) connected to the drill body (90) This is a reagent immediate reaction type concrete test device characterized by the fact that when drilling, the crushed powder is collected under the transparent (20) and reacts with the reagent.

[0012] In addition, the present invention is a reagent immediate reaction type concrete testing device characterized in that a support plate (43), which is a horizontal plate body in a direction orthogonal to the drill bit (91), is installed on the support member (13), and a case (40) to which a smartphone (50) equipped with a camera (51) is coupled is attached to the end of the support plate (43), so that the transparent body (20) and the drill body (90) are photographed through the camera (51) of the smartphone (50).

[0013] In addition, the present invention is a reagent immediate reaction type concrete testing device characterized by having an iron upper protruding plate (15) protruding upwardly installed on the upper side of the contact plate (10), and a fixing plate (61) having an indicator chuck (60) protruding from the front side and a plurality of magnets (63) installed on the back side being magnetically attached to the surface of the upper protruding plate (15). Effects of the invention

[0015] Through the present invention, rapid and accurate measurement of concrete carbonation depth is possible using only a device with a simple configuration.

[0016] In particular, since the drilling of concrete specimens, collection of crushed powder, and reaction test can be performed all at once by a single inspector, the efficiency of concrete carbonation testing can be improved. Brief explanation of the drawing

[0018] FIG. 1 is an exemplary diagram of the use state of the present invention. FIG. 2 is a perspective view of the present invention FIG. 3 is an exploded perspective view of the present invention. FIG. 4 is a rear exploded perspective view of the present invention. FIG. 5 is an example diagram of the usage state of a photographic embodiment of the present invention. FIG. 6 is an exploded perspective view of the embodiment of FIG. 5. FIG. 7 is an explanatory diagram of the usage method of the embodiment of FIG. 5. Specific details for implementing the invention

[0019] The detailed configuration of the present invention will be explained with reference to the attached drawings as follows.

[0020] First, as illustrated in FIG. 1, which is a drawing illustrating the use of the present invention, the present invention is a device for collecting concrete crushing powder discharged to the outside as the drill bit (91) enters the concrete specimen when drilling a concrete specimen with a drill bit (91) mounted on a drill body (90), and is composed of a contact plate (10) that adheres to the surface of the concrete specimen and a transparent container (20) that is coupled to the front surface of the contact plate (10), and the drill bit (91) that drills the specimen enters the interior of the specimen by passing through the upper part of the device of the present invention.

[0021] That is, the present invention is a concrete testing device that collects crushed powder discharged when a concrete specimen is drilled and reacts it with a reagent, and as shown in FIGS. 2 and 3, it is composed of a contact plate (10) having an overall triangular shape and a support part (13) formed at the bottom, and a transparent container (20) that is connected to the front side of the contact plate (10) and has a reagent, which is a phenolphthalein solution, loaded inside.

[0022] As shown in FIGS. 1 and 3, a contact plate (10) with a plate hole (11) perforated in the upper center is attached to the surface of a concrete specimen, and a support portion (13) protruding forward is formed on the lower part of the contact plate (10), and a light source (14), such as a light bulb or LED (Light Emitting Diode), is mounted on the upper part of the support portion (13) to illuminate the inside of a transparent container (20) installed on the upper side of the support portion (13).

[0023] As shown in FIG. 3, the support member (13) formed at the bottom of the contact plate (10) serves to support the transparent part (20) that is combined with the contact plate (10), and a power source such as a circuit and a battery for driving a light source (14) is built inside the support member (13).

[0024] As shown in FIGS. 2 to 4, the transparent container (20) installed on the front of the contact plate (10) is a transparent container with an open rear portion that is connected to the contact plate (10), and a storage tank (31) in which a reagent is stored is formed inside the transparent container (20), so that the condition of the reagent loaded in the storage tank (31) inside the transparent container (20) can be easily checked from the outside.

[0025] As shown in FIGS. 3 and 4, a transparent front plate (22) with a hollow hole (21) perforated in the upper center is formed with a side wall (23) on the outer edge and a bottom plate (24) on the lower edge of the front plate (22) to form a transparent (20). This transparent (20) is coupled to the upper side of the support (13) of the contact plate (10). A coupling groove (12) having the same shape as the outer edge of the transparent (20) is formed in the upper front side of the support (13) of the contact plate (10), and the ends of the side wall (23) and the bottom plate (24) of the transparent (20) are coupled to the coupling groove (12) and fixed.

[0026] That is, as the rear end of the side wall portion (23) and the rear end of the bottom plate portion (24) of the transparent container (20), which is an open container at the back, are connected to the coupling groove (12) on the front of the contact plate (10), the internal space of the transparent container (20) is isolated from the outside and forms a sealed chamber. Thus, as shown in FIG. 1, when the tip of the drill bit (91) connected to the drill body (90) sequentially passes through the hole (21) and the plate hole (11) and enters in a direction perpendicular to the contact plate (10) and perpendicular to the surface of the test subject to drill, the crushed powder generated when the drill bit (91) drills the test subject is collected in the space within the sealed chamber formed by the transparent container (20) and the contact plate (10), and eventually is collected to the lower side of the transparent container (20) and reacts with the reagent stored in the storage tank (31).

[0027] As shown in FIG. 4, a method of forming a reservoir (31) inside a transparent container (20) may be applied such that a rear wall plate (25) is formed on the lower rear side of the transparent container (20), and the lower part of the transparent front plate (22), the lower part of the two transparent side walls (23), the rear wall plate (25), and the bottom plate (24) form the reservoir (31). In addition, a method of embedding a separate transparent container in the lower inner side of the transparent container (20) may also be applied.

[0028] In the present invention, the phenolphthalein solution stored as a reagent in the storage tank (31) has a characteristic of being extremely sensitive to reactivity with basic powder. Therefore, if the concrete powder maintains its basicity without being carbonated or neutralized, it will cause an immediate discoloration reaction with only a small amount of input, and thus the inspector can immediately detect the discoloration of the reagent stored in the transparent tank (20).

[0029] In particular, as described above, when the light source (14) on the upper surface of the support member (13) illuminates the inside of the transparent (20), the light emitted from the light source (14) diffuses as it passes through the reagent stored in the reservoir (31), so that the discoloration of the reagent can be further emphasized and confirmed.

[0030] That is, as shown in FIG. 1, the device of the present invention is placed in close contact with a test subject, and a drill body (90) equipped with a drill bit (91) is operated to perform drilling while observing the transparent container (20). If the drilling of the drill bit (91) is stopped immediately upon discoloration of the reagent inside the transparent container (20), the depth of entry of the drill bit (91) at that point in time can be measured as the carbonation depth. Here, the depth of entry of the drill bit (91) can be measured indirectly, such as by measuring the length of the drill bit (91) exposed outside the transparent container (20) and subtracting it from the total length of the drill bit (91), or by directly measuring the depth of drilling after separating the device of the present invention, including the drill bit (91), the transparent container (20), and the contact plate (10), from the test subject.

[0031] Meanwhile, in the use of the device of the present invention as shown in FIG. 1, the fixation of the test subject by the contact plate (10) is first achieved by the drill bit (91) passing through the transparent (20) and the contact plate (10) and entering the test subject. The drill bit (91) itself may perform the role of supporting the device of the present invention, including the contact plate (10). However, to suppress the accompanying rotation of the device of the present invention due to the high-speed rotation of the drill bit (91) and to enable a firm fixation of the contact plate (10) to the surface of the test subject, as shown in FIG. 4, an inwardly recessed cup portion (18) is formed on the back surface of the contact plate (10), and elasticity is provided to the area where the indented cup portion (18) is formed on the back surface of the contact plate (10), so that the outer edge of the indented cup portion (18) can be stably pressed against the surface of the test subject.

[0032] That is, the lower back surface of the contact plate (10) is made of a rubber material, and an inwardly recessed cup portion (18) is formed in this area so that the inwardly recessed cup portion (18) acts as a vacuum cup, thereby allowing a tight compressive force to be formed between the surface of the test subject and the back surface of the contact plate (10).

[0033] In addition, as shown in FIG. 4, an upper protruding plate (15) is formed on the upper side of the contact plate (10) and a lower protruding plate (17) is formed on the lower side of the contact plate (10). By forming through holes (16) in the upper protruding plate (15) and the lower protruding plate (17), if it is determined that it is difficult to fix the test subject of the device of the present invention solely by the compressive force of the recessed cup portion (18), the device of the present invention can be fixed more firmly by passing a small screw through the through holes (16) and fastening it to the test subject.

[0034] FIGS. 5 to 7 are photographic examples that allow for the identification of the discoloration point of the reagent stored in the transparent container (20) and the penetration depth of the drill bit (91) more accurately and quickly, as well as the recording of the entire concrete carbonation test process using the present invention, thereby significantly improving work convenience, accuracy, and test reliability.

[0035] As shown in FIGS. 5 to 7, a smartphone (50) equipped with a camera (51) is connected to the device of the present invention described above, and the camera (51) of the smartphone (50) is configured to photograph the transparent (20) and the drill body (90), and can be utilized in a way that allows the smartphone (50) carried by the inspector to be easily mounted as needed.

[0036] That is, as shown in FIGS. 5 and 6, a support plate (43), which is a horizontal plate body in a direction orthogonal to a planar drill bit (91), is installed on a support portion (13) formed on the lower part of a contact plate (10), and a case (40) to which a smartphone (50) equipped with a camera (51) is coupled is joined to the end of the support plate (43). A specific method of installing the support plate (43) may be a method in which a bracket (44) is formed protruding from the center of the front surface of the support portion (13), and the end of the bracket (44) and the other end of the case (40) joint of the support plate (43) are connected through a rotation axis (45).

[0037] As shown in FIG. 6, a cut-out (41) is formed in the case (40) to which the smartphone (50) is attached, so that the camera (51) of the smartphone (50) can be exposed to the outside through the cut-out (41). As the exposed camera (51) mounted on the smartphone (50) aims forward, the transparent (20), as well as the drill bit (91) and the drill body (90), are included within the shooting angle of the camera (51), and these components can be photographed at once.

[0038] That is, as shown in FIG. 5, when the concrete testing device of the present invention described above and the smartphone (50) are connected through a support plate (43), etc., and the smartphone (50) camera (51) is operated to record a video while drilling the test specimen with a drill bit (91), the discoloration of the reagent inside the transparent container (20) and the positions of the drill bit (91) and the drill body (90) can be simultaneously recorded in a video. Therefore, even if the inspector fails to identify the moment of discoloration of the reagent and continues drilling, the exact time of discoloration of the reagent and the depth of entry of the drill bit (91) at that time can be confirmed by checking the video recorded on the smartphone (50) later.

[0039] In addition, as shown in FIGS. 6 and 7, by connecting the bracket (44) and the support plate (43) attached to the support member (13) so that they can be freely rotated through the rotation axis (45), the shooting direction of the smartphone (50) can be freely adjusted, and thereby, shooting in an appropriate direction can be performed depending on the site conditions or the position of the user of the drill body (90).

[0040] For example, when one side of the space is extremely narrow, such as in the corner of an indoor wall, the support plate (43) can be rotated toward the open space side, or for a right-handed user, the auxiliary handle of the drill body (90) is positioned on the left side as in FIG. 5 and the smartphone (50) is positioned on the right side, and for a left-handed user, the smartphone (50) is positioned on the left side as in FIG. 7.

[0041] Meanwhile, as a means to immediately determine the carbonation depth, that is, the entry depth of the drill bit (91), as shown in FIGS. 5 to 7, an indicator chuck (60) protruding toward the drill body (90) is mounted on the upper protruding plate (15) of the upper part of the contact plate (10) of the present invention.

[0042] This indicator (60) is a narrow, long plate that protrudes toward the front side of the device of the present invention, that is, toward the drill body (90), as shown in FIG. 5, and has a number of scales marked on its surface so that the position of the drill body (90) can be determined in real time as the drill body (90) advances in accordance with the drill bit (91) entering the test object, and this is particularly useful for determining the position of the drill body (90) at different points in time when filming the entire test process through a smartphone (50).

[0043] As shown in FIGS. 6 and 7, an iron upper protruding plate (15) protruding upward is installed on the upper side of the contact plate (10), and a mounting plate (61) having a protruding indicator (60) formed on the front side and a plurality of magnets (63) installed on the back side is magnetically attached to the surface of the upper protruding plate (15), thereby enabling free and easy attachment and detachment of the indicator indicator (60) of the present invention, as well as free adjustment of the position of the indicator indicator (60).

[0044] That is, the position of the indicator chuck (60) can be adjusted by adjusting the attachment position of the mounting plate (61) on the surface of the steel upper protruding plate (15). For example, when a large drill is used and the size of the drill body (90) is relatively large, the indicator chuck (60) can be moved further upward, and when a small drill is used and the drill body (90) is relatively small, the indicator chuck (60) can be moved further downward so that the drill body (90) and the indicator chuck (60) are brought closer together.

[0045] In addition, as shown in FIGS. 6 and 7, by forming the joint between the indicator chuck (60) and the attachment plate (61) at an angle to the end rather than at the center of the attachment plate (61), the height of the indicator chuck (60) can be adjusted more freely by attaching the indicator chuck (60) upside down even on the narrow surface of the upper protruding plate (15). Explanation of the symbols

[0047] 10 : Contact plate 11 : Office 12 : Connecting groove 13 : Support 14 : Light source 15 : Sangdol Publishing 16: Communion 17 : Hadol Publishing 18 : Urinary cup part 20 : Transparency 21 : Airborne 22 : Front plate section 23 : Sidewall 24 : Bottom plate 25 : Rear wall panel 31 : Retention basin 40 : Case 41 : Incision 43 : Support plate 44 : bracket 45 : Rotation axis 50 : Smartphone 51 : Camera 60 : Indicator 61 : Transfer plate 63 : Magnet 90 : Drill body 91 : Drill bit

Claims

Claim 1 A concrete testing device for collecting crushed powder discharged during drilling of a concrete specimen and reacting it with a reagent, wherein a contact plate (10) with a plate hole (11) perforated in the upper center is attached to the surface of the specimen, a support part (13) protruding forward is formed on the lower part of the contact plate (10), a transparent front plate part (22) with a hollow hole (21) perforated in the upper center and a side wall part (23) is formed on the outer side of the transparent front plate part (22) which is narrow at the top and wide at the bottom, and a transparent box (20) with an open rear side is coupled to the upper side of the support part (13) of the contact plate (10), and a storage tank (31) for storing a reagent is formed inside the transparent box (20), so that when the specimen is drilled through the hollow hole (21) and plate hole (11) of a drill bit (91) connected to a drill body (90), the crushed powder is collected on the lower side of the transparent box (20) and reacts with the reagent. A reagent immediate reaction type photographic concrete testing device characterized in that, in the support part (13), a support plate (43) which is a horizontal plate body in a direction orthogonal to the drill bit (91) is installed; a case (40) to which a smartphone (50) equipped with a camera (51) is coupled is joined to the end of the support plate (43); and the transparent (20) and the drill body (90) are photographed through the camera (51) of the smartphone (50).

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